In vitro Assays to Evaluate Specificity and Affinity in Protein-phospholipid Interactions

Hendry Susila, Snjezana Juric, Katarzyna Gawarecka, Kyung Sook Chung, Suhyun Jin, Soo Jin Kim, Zeeshan Nasim, Geummin Youn, Ji Hoon Ahn

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    Protein-lipid interactions play important roles in many biological processes, including metabolism, signaling, and transport; however, computational and structural analyses often fail to predict such interactions, and determining which lipids participate in these interactions remains challenging. In vitro assays to assess the physical interaction between a protein of interest and a panel of phospholipids provide crucial information for predicting the functionality of these interactions in vivo. In this protocol, which we developed in the context of evaluating protein-lipid binding of the Arabidopsis thaliana florigen FLOWERING LOCUS T, we describe four independent in vitro experiments to determine the interaction of a protein with phospholipids: lipid-protein overlay assays, liposome binding assays, biotin-phospholipid pull-down assays, and fluorescence polarization assays. These complementary assays allow the researcher to test whether the protein of interest interacts with lipids in the test panel, identify the relevant lipids, and assess the strength of the interaction.

    Original languageEnglish
    Article numbere4421
    JournalBio-protocol
    Volume12
    Issue number10
    DOIs
    Publication statusPublished - 2022 May 20

    Bibliographical note

    Publisher Copyright:
    © 2022 Bio-protocol LLC. All Rights Reserved.

    Keywords

    • FLOWERING LOCUS T
    • Fluorescence polarization
    • In vitro assay
    • Liposome
    • Phosphatidylcholine
    • Phosphatidylglycerol
    • Phospholipids
    • Protein-phospholipids interaction

    ASJC Scopus subject areas

    • General Neuroscience
    • General Biochemistry,Genetics and Molecular Biology
    • General Immunology and Microbiology
    • Plant Science

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